Portable speaker



FIG. 1 is a perspective view of a portable speaker, showing our new design;

FIG. 2 is a front view of the portable speaker shown in FIG. 1;

FIG. 3 is a back view of the portable speaker shown in FIG. 1;

FIG. 4 is a left side view of the portable speaker shown in FIG. 1;

FIG. 5 is a right side view of the portable speaker shown in FIG. 1;

FIG. 6 is a top plan view of the portable speaker shown in FIG. 1; and,

FIG. 7 is a bottom plan view of the portable speaker shown in FIG. 1.

The broken line portions in FIGS. 1-7 are included to show unclaimed subject matter only form no part of the claimed design. 

CLAIM The ornamental design for a portable speaker, as shown and described. 